sunos man page for mlib_videoh263overlappedmc_u8_u8

mlib_VideoH263OverlappedMC_U8_U8(3MLIB) 		    mediaLib Library Functions			   mlib_VideoH263OverlappedMC_U8_U8(3MLIB)

NAME
       mlib_VideoH263OverlappedMC_U8_U8 - generates the 8x8 luminance prediction block in the Advanced Prediction Mode for H.263 codec

SYNOPSIS
       cc [ flag... ] file... -lmlib [ library... ]
       #include <mlib.h>

       mlib_status  mlib_VideoH263OverlappedMC_U8_U8(mlib_u8  *curr_block,  const  mlib_u8  *ref_frame,  mlib_s32 mch, mlib_s32 mcv, mlib_s32 mah,
       mlib_s32 mav, mlib_s32 mbh, mlib_s32 mbv,  mlib_s32  mlh,  mlib_s32  mlv,  mlib_s32  mrh,  mlib_s32  mrv,  mlib_s32  curr_stride,  mlib_s32
       ref_stride);

DESCRIPTION
       The mlib_VideoH263OverlappedMC_U8_U8() function generates an 8x8 luminance prediction block (motion-compensated block) in the Advanced Pre-
       diction Mode for H.263 codec. The reference frame in this function is an interpolated frame.

       The following equation is used:

       for x = 0, 1, 2, 3; y = 0, 1, 2, 3

	   curr(x, y) = (ref(2x + mch, 2y + mcv)*H0(x, y) +
			 ref(2x + mah, 2y + mav)*H1(x, y) +
			 ref(2x + mlh, 2y + mlv)*H2(x, y)) / 8;

       for x = 4, 5, 6, 7; y = 0, 1, 2, 3

	   curr(x, y) = (ref(2x + mch, 2y + mcv)*H0(x, y) +
			 ref(2x + mah, 2y + mav)*H1(x, y) +
			 ref(2x + mrh, 2y + mrv)*H2(x, y)) / 8;

       for x = 0, 1, 2, 3; y = 4, 5, 6, 7

	   curr(x, y) = (ref(2x + mch, 2y + mcv)*H0(x, y) +
			 ref(2x + mbh, 2y + mbv)*H1(x, y) +
			 ref(2x + mlh, 2y + mlv)*H2(x, y)) / 8;

       for x = 4, 5, 6, 7; y = 4, 5, 6, 7

	   curr(x, y) = (ref(2x + mch, 2y + mcv)*H0(x, y) +
			 ref(2x + mbh, 2y + mbv)*H1(x, y) +
			 ref(2x + mrh, 2y + mrv)*H2(x, y)) / 8;

       where

	    [ 4 5 5 5 5 5 5 4 ]
	    | 5 5 5 5 5 5 5 5 |
	    | 5 5 6 6 6 6 5 5 |
       H0 = | 5 5 6 6 6 6 5 5 |
	    | 5 5 6 6 6 6 5 5 |
	    | 5 5 6 6 6 6 5 5 |
	    | 5 5 5 5 5 5 5 5 |
	    [ 4 5 5 5 5 5 5 4 ]

	    [ 2 2 2 2 2 2 2 2 ]
	    | 1 1 2 2 2 2 1 1 |
	    | 1 1 1 1 1 1 1 1 |
       H1 = | 1 1 1 1 1 1 1 1 |
	    | 1 1 1 1 1 1 1 1 |
	    | 1 1 1 1 1 1 1 1 |
	    | 1 1 2 2 2 2 1 1 |
	    [ 2 2 2 2 2 2 2 2 ]

	    [ 2 1 1 1 1 1 1 2 ]
	    | 2 2 1 1 1 1 2 2 |
	    | 2 2 1 1 1 1 2 2 |
       H2 = | 2 2 1 1 1 1 2 2 |
	    | 2 2 1 1 1 1 2 2 |
	    | 2 2 1 1 1 1 2 2 |
	    | 2 2 1 1 1 1 2 2 |
	    [ 2 1 1 1 1 1 1 2 ]

PARAMETERS
       The function takes the following arguments:

       curr_block      Pointer to the current block.

       ref_frame       Pointer to the interpolated reference frame.

       mch	       Horizontal coordinate of the motion vector for the current block.

       mcv	       Vertical coordinate of the motion vector for the current block.

       mah	       Horizontal coordinate of the motion vector for the block above the current block.

       mav	       Vertical coordinate of the motion vector for the block above the current block.

       mbh	       Horizontal coordinate of the motion vector for the block below the current block.

       mbv	       Vertical coordinate of the motion vector for the block below the current block.

       mlh	       Horizontal coordinate of the motion vector for the block to the left of the current block.

       mlv	       Vertical coordinate of the motion vector for the block to the left of the current block.

       mrh	       Horizontal coordinate of the motion vector for the block to the right of the current block.

       mrv	       Vertical coordinate of the motion vector for the block to the right of the current block.

       curr_stride     Stride, in bytes, between adjacent rows in the current frame.

       ref_stride      Stride, in bytes, between adjacent rows in the interpolated reference frame.

RETURN VALUES
       The function returns MLIB_SUCCESS if successful. Otherwise it returns MLIB_FAILURE.

ATTRIBUTES
       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Evolving			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |MT-Safe			   |
       +-----------------------------+-----------------------------+

SEE ALSO
       mlib_VideoAddBlock_U8_S16(3MLIB),       mlib_VideoCopyRef_S16_U8(3MLIB),       mlib_VideoCopyRef_S16_U8_16x16(3MLIB),	   mlib_VideoCopy-
       Ref_U8_U8_16x16(3MLIB),	     mlib_VideoCopyRefAve_U8_U8_16x16(3MLIB),	   mlib_VideoH263OverlappedMC_S16_U8(3MLIB),	  mlib_VideoInter-
       pAveX_U8_U8(3MLIB), mlib_VideoInterpAveX_U8_U8_16x16(3MLIB), mlib_VideoInterpAveXY_U8_U8(3MLIB),  mlib_VideoInterpAveXY_U8_U8_16x16(3MLIB),
       mlib_VideoInterpAveY_U8_U8(3MLIB),	mlib_VideoInterpAveY_U8_U8_16x16(3MLIB),      mlib_VideoInterpX_S16_U8(3MLIB),	    mlib_VideoInt-
       erpX_S16_U8_16x16(3MLIB),   mlib_VideoInterpX_U8_U8(3MLIB),    mlib_VideoInterpXY_S16_U8(3MLIB),    mlib_VideoInterpXY_S16_U8_16x16(3MLIB),
       mlib_VideoInterpXY_U8_U8(3MLIB),        mlib_VideoInterpXY_U8_U8_16x16(3MLIB),	     mlib_VideoInterpY_S16_U8(3MLIB),	    mlib_VideoInt-
       erpY_S16_U8_16x16(3MLIB),   mlib_VideoInterpY_U8_U8(3MLIB),    mlib_VideoInterpY_U8_U8_16x16(3MLIB),    mlib_VideoP64Decimate_U8_U8(3MLIB),
       mlib_VideoP64Loop_S16_U8(3MLIB), mlib_VideoP64Loop_U8_U8(3MLIB), attributes(5)

SunOS 5.10							    10 Nov 2004 			   mlib_VideoH263OverlappedMC_U8_U8(3MLIB)